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Status

This page documents the implementation status of various HTML and CSS features in Blitz.

CSS PropertiesHTML ElementsEventsWPT TestsWPT History

This page documents Blitz's scores on the "css" subsuite of the Web Platform Tests.

wpt / css / css-properties-values-api

Score history
1 month3 months6 months1 year2 years4 yearsAll time
0%20%40%60%80%100%May 2025Jul 2025Sep 2025Nov 2025Jan 2026Mar 2026May 2026Jul 2026Sep 2026css/css-properties-values-api

Data from commit:
ab0e30b Give form controls a UA default font-family (#940) (2026-09-25)

AreaInterop ScoreTestsTest %SubtestsSubtest %
Total33.14%(34/124)27.42%(535/1394)38.38%
animation2.90%(2/69)2.90%(2/243)0.82%
crashtests100.00%(5/5)100.00%(5/5)100.00%
TestSubtestsSubtest %Status
animate-invalid.html(0/1)0.00%FAIL
at-property-animation.html(3/19)15.79%FAIL
at-property-cssom.html(32/40)80.00%FAIL
at-property-non-matching-media-crash.html(1/1)100.00%PASS
at-property-optional-initial-value.html(1/1)100.00%PASS
at-property-shadow.html(0/1)0.00%FAIL
at-property-stylesheets.html(5/5)100.00%PASS
at-property-typedom.html(0/2)0.00%FAIL
at-property-viewport-units-dynamic.html(0/1)0.00%FAIL
at-property-viewport-units.html(0/24)0.00%FAIL
at-property.html(95/106)89.62%FAIL
conditional-rules.html(3/3)100.00%PASS
determine-registration.html(15/15)100.00%PASS
font-property-unit-cycles.tentative.html(40/95)42.11%FAIL
font-size-animation.html(0/1)0.00%FAIL
get-computed-style-enumeration.html(2/5)40.00%FAIL
idlharness.html(10/16)62.50%FAIL
initial-value-unit-arithmetic.html(0/1)0.00%FAIL
invalid-at-computed-value-time.html(5/5)100.00%PASS
non-computed-unit-cycles.html(8/8)100.00%PASS
property-cascade.html(2/2)100.00%PASS
register-property-sign-mixed-lengths.html(6/6)100.00%PASS
register-property-syntax-parsing.html(128/246)52.03%FAIL
register-property.html(3/6)50.00%FAIL
registered-properties-inheritance.html(8/8)100.00%PASS
registered-property-change-style-001.html(2/2)100.00%PASS
registered-property-change-style-002.html(0/1)0.00%FAIL
registered-property-computation-color-001.html(1/1)100.00%PASS
registered-property-computation-color-002.html(1/1)100.00%PASS
registered-property-computation-color-003.html(1/1)100.00%PASS
registered-property-computation-color-004.html(1/1)100.00%PASS
registered-property-computation-color-005.html(1/1)100.00%PASS
registered-property-computation-color-006.html(1/1)100.00%PASS
registered-property-computation.html(75/75)100.00%PASS
registered-property-crosstalk.html(1/1)100.00%PASS
registered-property-cssom.html(8/8)100.00%PASS
registered-property-dependency-through-fallback.html(2/2)100.00%PASS
registered-property-ident-function.html(0/1)0.00%FAIL
registered-property-initial.html(13/29)44.83%FAIL
registered-property-parse-crash.html(1/1)100.00%PASS
registered-property-revert.html(2/4)50.00%FAIL
resolved-color-value.html(1/1)100.00%PASS
self-utils.html(3/3)100.00%PASS
typedom.html(0/325)0.00%FAIL
unit-cycles.html(24/27)88.89%FAIL
url-resolution.html(0/18)0.00%FAIL
var-reference-registered-properties-002.html(1/1)100.00%PASS
var-reference-registered-properties-cycles.html(5/5)100.00%PASS
var-reference-registered-properties.html(15/16)93.75%FAIL
var-reference-unit-cycles.html(2/2)100.00%PASS